亚音速民机平尾初步设计

本文着重搜集、归纳了那些重要的,且又便于在飞机初步设计阶段使用的品质要求,并将它们用平尾相对面积和飞机重心之间的解析关系表达出来。利用这种解析关系,可以在平尾相对面积和飞机重心位置的参数平面上,绘制出各种限制边界,形成所谓“剪刀图”。如果所要求的飞机重心变化范围给定,则可在这种边界限制图上很容易地确定出所需要的平尾相对面积.为说明本文方法的可行性和可靠性,最后还以Y-7飞机为算例进行了验证性计算.

PRELIMINARY DESIGN OF HORIZONTAL TAIL OF SUBSONIC CIVIL AEROPLANE

This paper are collected and expressed by the analytical relationship of horizontal tail area to aeroplane center of gravity.Using the analytical relationship, many boundaries namely scissors sketed, could be drawn on the parameter plane of horizontal tail area and aeroplane center of gravity.When the range of aeroplane center of gravity is given, the required horizontal tail area, which will satisfy all of the different flying quality boundaries, could be choosed easily. In order to show the feasibility and reliability of the method adopted in this paper,using aeroplane Y-7 as an example, a verification calculation is completed.